add endian switch functions to replace macros SWITCH_INT/LONG/SHORT, with BLI_endian_switch_int32/int64/float/double...

source/blender/blenlib/BLI_endian_switch.h

@@ -0,0 +1,33 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor(s): Campbell Barton
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef __BLI_ENDIAN_SWITCH_H__
+#define __BLI_ENDIAN_SWITCH_H__
+
+/** \file BLI_endian_switch.h
+ *  \ingroup bli
+ */
+
+#include "BLI_endian_switch_inline.h"
+
+
+#endif  /* __BLI_ENDIAN_SWITCH_H__ */